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单词 andradite
释义

Definition of andradite in English:

andradite

nounˈandrədʌɪtˈandrəˌdīt
mass noun
  • A mineral of the garnet group, containing calcium and iron. It occurs as yellow, green, brown, or black crystals, sometimes of gem quality.

    Example sentencesExamples
    • The skarns also contain hornblende, calcite, pyroxene, tremolite, pyrrhotite, molybdenite, galena, chalcopyrite, arsenopyrite, garnet (probably andradite or grossular), and pyrite.
    • The third major find in recent years is green andradite, some of which may be considered demantoid.
    • The crystals have a typical pseudo-octahedral habit, often with composite crystal faces, and are typically associated with red andradite, hematite, calcite, gaudefroyite, barite. kutnohorite, celestine, or even sturmanite.
    • The portion of the skarn where the rainbow garnets are found is essentially a coarse-grained aggregate of pure andradite.
    • In the introduction to the garnet group, the various distinct species such as pyrope, almandite, grossularite, andradite, and spessartite are referred to as varieties.

Origin

Mid 19th century: named after J. B. de Andrada e Silva (circa1763–1838), Brazilian geologist, + -ite1.

 
 

Definition of andradite in US English:

andradite

nounˈandrəˌdīt
  • A mineral of the garnet group, containing calcium and iron. It occurs as yellow, green, brown, or black crystals, sometimes of gem quality.

    Example sentencesExamples
    • In the introduction to the garnet group, the various distinct species such as pyrope, almandite, grossularite, andradite, and spessartite are referred to as varieties.
    • The portion of the skarn where the rainbow garnets are found is essentially a coarse-grained aggregate of pure andradite.
    • The third major find in recent years is green andradite, some of which may be considered demantoid.
    • The crystals have a typical pseudo-octahedral habit, often with composite crystal faces, and are typically associated with red andradite, hematite, calcite, gaudefroyite, barite. kutnohorite, celestine, or even sturmanite.
    • The skarns also contain hornblende, calcite, pyroxene, tremolite, pyrrhotite, molybdenite, galena, chalcopyrite, arsenopyrite, garnet (probably andradite or grossular), and pyrite.

Origin

Mid 19th century: named after J. B. de Andrada e Silva ( c 1763–1838), Brazilian geologist, + -ite.

 
 
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更新时间:2024/12/23 23:14:15